autocore_std/lib.rs
1//! # AutoCore Standard Library
2//!
3//! The standard library for writing AutoCore control programs. This crate provides
4//! everything you need to build real-time control applications that integrate with
5//! the AutoCore server ecosystem.
6//!
7//! ## Overview
8//!
9//! AutoCore control programs run as separate processes that communicate with the
10//! autocore-server via shared memory and IPC. This library handles all the low-level
11//! details, allowing you to focus on your control logic.
12//!
13//! ```text
14//! ┌─────────────────────────┐ ┌─────────────────────────┐
15//! │ autocore-server │ │ Your Control Program │
16//! │ │ │ │
17//! │ ┌─────────────────┐ │ │ ┌─────────────────┐ │
18//! │ │ Shared Memory │◄───┼─────┼──│ ControlRunner │ │
19//! │ │ (GlobalMemory) │ │ │ │ │ │
20//! │ └─────────────────┘ │ │ │ ┌─────────────┐ │ │
21//! │ │ │ │ │ Your Logic │ │ │
22//! │ ┌─────────────────┐ │ │ │ └─────────────┘ │ │
23//! │ │ Tick Signal │────┼─────┼──│ │ │
24//! │ └─────────────────┘ │ │ └─────────────────┘ │
25//! └─────────────────────────┘ └─────────────────────────┘
26//! ```
27//!
28//! ## Quick Start
29//!
30//! 1. Create a new control project using `acctl`:
31//! ```bash
32//! acctl clone <server-ip> <project-name>
33//! ```
34//!
35//! 2. Implement the [`ControlProgram`] trait:
36//! ```ignore
37//! use autocore_std::ControlProgram;
38//! use autocore_std::fb::RTrig;
39//!
40//! // GlobalMemory is generated from your project.json
41//! mod gm;
42//! use gm::GlobalMemory;
43//!
44//! pub struct MyProgram {
45//! start_button: RTrig,
46//! }
47//!
48//! impl MyProgram {
49//! pub fn new() -> Self {
50//! Self {
51//! start_button: RTrig::new(),
52//! }
53//! }
54//! }
55//!
56//! impl ControlProgram for MyProgram {
57//! type Memory = GlobalMemory;
58//!
59//! fn process_tick(&mut self, mem: &mut GlobalMemory, _cycle: u64) {
60//! // Detect rising edge on start button
61//! if self.start_button.call(mem.inputs.start_button) {
62//! mem.outputs.motor_running = true;
63//! autocore_std::log::info!("Motor started!");
64//! }
65//! }
66//! }
67//! ```
68//!
69//! 3. Use the [`autocore_main!`] macro for the entry point:
70//! ```ignore
71//! autocore_std::autocore_main!(MyProgram, "my_project_shm", "tick");
72//! ```
73//!
74//! ## Function Blocks (IEC 61131-3 Inspired)
75//!
76//! This library includes standard function blocks commonly used in PLC programming:
77//!
78//! - [`fb::RTrig`] - Rising edge detector (false→true transition)
79//! - [`fb::FTrig`] - Falling edge detector (true→false transition)
80//! - [`fb::Ton`] - Timer On Delay (output after delay)
81//! - [`fb::BitResetOnDelay`] - Resets a boolean after it has been true for a duration
82//! - [`fb::SimpleTimer`] - Simple one-shot timer (NOT IEC 61131-3, for imperative use)
83//! - [`fb::StateMachine`] - State machine helper with automatic timer management
84//! - [`fb::RunningAverage`] - Accumulates values and computes their arithmetic mean
85//! - [`fb::Beeper`] - Audible beeper controller with configurable beep sequences
86//! - [`fb::Heartbeat`] - Monitors a remote heartbeat counter for connection loss
87//!
88//! ### Example: Edge Detection
89//!
90//! ```
91//! use autocore_std::fb::RTrig;
92//!
93//! let mut trigger = RTrig::new();
94//!
95//! // First call with false - no edge
96//! assert_eq!(trigger.call(false), false);
97//!
98//! // Rising edge detected!
99//! assert_eq!(trigger.call(true), true);
100//!
101//! // Still true, but no edge (already high)
102//! assert_eq!(trigger.call(true), false);
103//!
104//! // Back to false
105//! assert_eq!(trigger.call(false), false);
106//!
107//! // Another rising edge
108//! assert_eq!(trigger.call(true), true);
109//! ```
110//!
111//! ### Example: Timer
112//!
113//! ```
114//! use autocore_std::fb::Ton;
115//! use std::time::Duration;
116//!
117//! let mut timer = Ton::new();
118//! let delay = Duration::from_millis(100);
119//!
120//! // Timer not enabled - output is false
121//! assert_eq!(timer.call(false, delay), false);
122//!
123//! // Enable timer - starts counting
124//! assert_eq!(timer.call(true, delay), false);
125//!
126//! // Still counting...
127//! std::thread::sleep(Duration::from_millis(50));
128//! assert_eq!(timer.call(true, delay), false);
129//! assert!(timer.et < delay); // Elapsed time < preset
130//!
131//! // After delay elapsed
132//! std::thread::sleep(Duration::from_millis(60));
133//! assert_eq!(timer.call(true, delay), true); // Output is now true!
134//! ```
135//!
136//! ## Logging
137//!
138//! Control programs can send log messages to the autocore-server for display in the
139//! web console. Logging is handled automatically when using [`ControlRunner`].
140//!
141//! ```ignore
142//! use autocore_std::log;
143//!
144//! log::trace!("Detailed trace message");
145//! log::debug!("Debug information");
146//! log::info!("Normal operation message");
147//! log::warn!("Warning condition detected");
148//! log::error!("Error occurred!");
149//! ```
150//!
151//! See the [`logger`] module for advanced configuration.
152//!
153//! ## Memory Synchronization
154//!
155//! The [`ControlRunner`] handles all shared memory synchronization automatically:
156//!
157//! 1. **Wait for tick** - Blocks until the server signals a new cycle
158//! 2. **Read inputs** - Copies shared memory to local buffer (atomic snapshot)
159//! 3. **Execute logic** - Your `process_tick` runs on the local buffer
160//! 4. **Write outputs** - Copies local buffer back to shared memory
161//!
162//! This ensures your control logic always sees a consistent view of the data,
163//! even when other processes are modifying shared memory.
164
165#![warn(missing_docs)]
166#![warn(rustdoc::missing_crate_level_docs)]
167#![doc(html_root_url = "https://docs.rs/autocore-std/3.3.0")]
168
169use anyhow::{anyhow, Result};
170use futures_util::{SinkExt, StreamExt};
171use log::LevelFilter;
172use mechutil::ipc::{CommandMessage, MessageType};
173use raw_sync::events::{Event, EventInit, EventState};
174use raw_sync::Timeout;
175use shared_memory::ShmemConf;
176use std::collections::HashMap;
177use std::sync::atomic::{fence, Ordering, AtomicBool};
178use std::sync::Arc;
179use std::time::Duration;
180use tokio_tungstenite::{connect_async, tungstenite::Message};
181
182/// UDP logger for sending log messages to autocore-server.
183///
184/// This module provides a non-blocking logger implementation that sends log messages
185/// via UDP to the autocore-server. Messages are batched and sent asynchronously to
186/// avoid impacting the control loop timing.
187///
188/// # Example
189///
190/// ```ignore
191/// use autocore_std::logger;
192/// use log::LevelFilter;
193///
194/// // Initialize the logger (done automatically by ControlRunner)
195/// logger::init_udp_logger("127.0.0.1", 39101, LevelFilter::Info, "control")?;
196///
197/// // Now you can use the log macros
198/// log::info!("System initialized");
199/// ```
200pub mod logger;
201
202// Re-export log crate for convenience - control programs can use autocore_std::log::info!() etc.
203pub use log;
204
205/// Function blocks for control programs (IEC 61131-3 inspired).
206pub mod fb;
207
208/// Interface protocols for communication between control programs and external sources.
209pub mod iface;
210
211/// Shared memory utilities for external modules.
212pub mod shm;
213
214// ============================================================================
215// Core Framework
216// ============================================================================
217
218/// Marker trait for generated GlobalMemory structs.
219///
220/// This trait is implemented by the auto-generated `GlobalMemory` struct
221/// that represents the shared memory layout. It serves as a marker for
222/// type safety in the control framework.
223///
224/// You don't need to implement this trait yourself - it's automatically
225/// implemented by the code generator.
226pub trait AutoCoreMemory {}
227
228/// Trait for detecting changes in memory structures.
229pub trait ChangeTracker {
230 /// Compare self with a previous state and return a list of changed fields.
231 /// Returns a vector of (field_name, new_value).
232 fn get_changes(&self, prev: &Self) -> Vec<(&'static str, serde_json::Value)>;
233}
234
235/// The trait that defines a control program's logic.
236///
237/// Implement this trait to create your control program. The associated `Memory`
238/// type should be the generated `GlobalMemory` struct from your project.
239///
240/// # Memory Type Requirements
241///
242/// The `Memory` type must implement `Copy` to allow efficient synchronization
243/// between shared memory and local buffers. This is automatically satisfied
244/// by the generated `GlobalMemory` struct.
245///
246/// # Lifecycle
247///
248/// 1. `initialize` is called once at startup
249/// 2. `process_tick` is called repeatedly in the control loop
250///
251/// # Example
252///
253/// ```ignore
254/// use autocore_std::ControlProgram;
255///
256/// mod gm;
257/// use gm::GlobalMemory;
258///
259/// pub struct MyController {
260/// cycle_counter: u64,
261/// }
262///
263/// impl MyController {
264/// pub fn new() -> Self {
265/// Self { cycle_counter: 0 }
266/// }
267/// }
268///
269/// impl ControlProgram for MyController {
270/// type Memory = GlobalMemory;
271///
272/// fn initialize(&mut self, mem: &mut GlobalMemory) {
273/// // Set initial output states
274/// mem.outputs.ready = true;
275/// log::info!("Controller initialized");
276/// }
277///
278/// fn process_tick(&mut self, mem: &mut GlobalMemory, cycle: u64) {
279/// self.cycle_counter = cycle;
280///
281/// // Your control logic here
282/// if mem.inputs.start && !mem.inputs.estop {
283/// mem.outputs.running = true;
284/// }
285/// }
286/// }
287/// ```
288pub trait ControlProgram {
289 /// The shared memory structure type (usually the generated `GlobalMemory`).
290 ///
291 /// Must implement `Copy` to allow efficient memory synchronization.
292 type Memory: Copy + ChangeTracker;
293
294 /// Called once when the control program starts.
295 ///
296 /// Use this to initialize output states, reset counters, or perform
297 /// any one-time setup. The default implementation does nothing.
298 ///
299 /// # Arguments
300 ///
301 /// * `mem` - Mutable reference to the shared memory. Changes are written
302 /// back to shared memory after this method returns.
303 fn initialize(&mut self, _mem: &mut Self::Memory) {}
304
305 /// The main control loop - called once per scan cycle.
306 ///
307 /// This is where your control logic lives. Read inputs from `mem`,
308 /// perform calculations, and write outputs back to `mem`.
309 ///
310 /// # Arguments
311 ///
312 /// * `mem` - Mutable reference to a local copy of the shared memory.
313 /// Changes made here are written back to shared memory after
314 /// this method returns.
315 /// * `cycle` - The current cycle number (increments each tick, starting at 1).
316 ///
317 /// # Timing
318 ///
319 /// This method should complete within the scan cycle time. Long-running
320 /// operations will cause cycle overruns.
321 fn process_tick(&mut self, mem: &mut Self::Memory, cycle: u64);
322}
323
324/// Configuration for the [`ControlRunner`].
325///
326/// Specifies connection parameters, shared memory names, and logging settings.
327/// Use [`Default::default()`] for typical configurations.
328///
329/// # Example
330///
331/// ```
332/// use autocore_std::RunnerConfig;
333/// use log::LevelFilter;
334///
335/// let config = RunnerConfig {
336/// server_host: "192.168.1.100".to_string(),
337/// module_name: "my_controller".to_string(),
338/// shm_name: "my_project_shm".to_string(),
339/// tick_signal_name: "tick".to_string(),
340/// busy_signal_name: Some("busy".to_string()),
341/// log_level: LevelFilter::Debug,
342/// ..Default::default()
343/// };
344/// ```
345#[derive(Debug, Clone)]
346pub struct RunnerConfig {
347 /// Server host address (default: "127.0.0.1")
348 pub server_host: String,
349 /// WebSocket port for commands (default: 11969)
350 pub ws_port: u16,
351 /// Module name for identification (default: "control")
352 pub module_name: String,
353 /// Shared memory segment name (must match server configuration)
354 pub shm_name: String,
355 /// Name of the tick signal in shared memory (triggers each scan cycle)
356 pub tick_signal_name: String,
357 /// Optional name of the busy signal (set when cycle completes)
358 pub busy_signal_name: Option<String>,
359 /// Minimum log level to send to the server (default: Info)
360 pub log_level: LevelFilter,
361 /// UDP port for sending logs to the server (default: 39101)
362 pub log_udp_port: u16,
363}
364
365/// Default WebSocket port for autocore-server
366pub const DEFAULT_WS_PORT: u16 = 11969;
367
368impl Default for RunnerConfig {
369 fn default() -> Self {
370 Self {
371 server_host: "127.0.0.1".to_string(),
372 ws_port: DEFAULT_WS_PORT,
373 module_name: "control".to_string(),
374 shm_name: "autocore_cyclic".to_string(),
375 tick_signal_name: "tick".to_string(),
376 busy_signal_name: None,
377 log_level: LevelFilter::Info,
378 log_udp_port: logger::DEFAULT_LOG_UDP_PORT,
379 }
380 }
381}
382
383
384/// The main execution engine for control programs.
385///
386/// `ControlRunner` handles all the infrastructure required to run a control program:
387///
388/// - Reading memory layout from the server's layout file
389/// - Opening and mapping shared memory
390/// - Setting up synchronization signals
391/// - Running the real-time control loop
392/// - Sending log messages to the server
393///
394/// # Usage
395///
396/// ```ignore
397/// use autocore_std::{ControlRunner, RunnerConfig};
398///
399/// let config = RunnerConfig {
400/// shm_name: "my_project_shm".to_string(),
401/// tick_signal_name: "tick".to_string(),
402/// ..Default::default()
403/// };
404///
405/// ControlRunner::new(MyProgram::new())
406/// .config(config)
407/// .run()?; // Blocks forever
408/// ```
409///
410/// # Control Loop
411///
412/// The runner executes a synchronous control loop:
413///
414/// 1. **Wait** - Blocks until the tick signal is set by the server
415/// 2. **Read** - Copies shared memory to a local buffer (acquire barrier)
416/// 3. **Execute** - Calls your `process_tick` method
417/// 4. **Write** - Copies local buffer back to shared memory (release barrier)
418/// 5. **Signal** - Sets the busy signal (if configured) to indicate completion
419///
420/// This ensures your code always sees a consistent snapshot of the data
421/// and that your writes are atomically visible to other processes.
422pub struct ControlRunner<P: ControlProgram> {
423 config: RunnerConfig,
424 program: P,
425}
426
427impl<P: ControlProgram> ControlRunner<P> {
428 /// Creates a new runner for the given control program.
429 ///
430 /// Uses default configuration. Call [`.config()`](Self::config) to customize.
431 ///
432 /// # Arguments
433 ///
434 /// * `program` - Your control program instance
435 ///
436 /// # Example
437 ///
438 /// ```ignore
439 /// let runner = ControlRunner::new(MyProgram::new());
440 /// ```
441 pub fn new(program: P) -> Self {
442 Self {
443 config: RunnerConfig::default(),
444 program,
445 }
446 }
447
448 /// Sets the configuration for this runner.
449 ///
450 /// # Arguments
451 ///
452 /// * `config` - The configuration to use
453 ///
454 /// # Example
455 ///
456 /// ```ignore
457 /// ControlRunner::new(MyProgram::new())
458 /// .config(RunnerConfig {
459 /// shm_name: "custom_shm".to_string(),
460 /// ..Default::default()
461 /// })
462 /// .run()?;
463 /// ```
464 pub fn config(mut self, config: RunnerConfig) -> Self {
465 self.config = config;
466 self
467 }
468
469 /// Starts the control loop.
470 ///
471 /// This method blocks indefinitely, running the control loop until
472 /// an error occurs or the process is terminated.
473 ///
474 /// # Returns
475 ///
476 /// Returns `Ok(())` only if the loop exits cleanly (which typically
477 /// doesn't happen). Returns an error if:
478 ///
479 /// - IPC connection fails
480 /// - Shared memory cannot be opened
481 /// - Signal offsets cannot be found
482 /// - A critical error occurs during execution
483 ///
484 /// # Example
485 ///
486 /// ```ignore
487 /// fn main() -> anyhow::Result<()> {
488 /// ControlRunner::new(MyProgram::new())
489 /// .config(config)
490 /// .run()
491 /// }
492 /// ```
493 pub fn run(mut self) -> Result<()> {
494 // Initialize UDP logger FIRST (before any log statements)
495 if let Err(e) = logger::init_udp_logger(
496 &self.config.server_host,
497 self.config.log_udp_port,
498 self.config.log_level,
499 "control",
500 ) {
501 eprintln!("Warning: Failed to initialize UDP logger: {}", e);
502 // Continue anyway - logging will just go nowhere
503 }
504
505 // We use a dedicated runtime for the setup phase
506 let rt = tokio::runtime::Builder::new_current_thread()
507 .enable_all()
508 .build()?;
509
510 rt.block_on(async {
511 log::info!("AutoCore Control Runner Starting...");
512
513 // 1. Connect to server via WebSocket and get layout
514 let ws_url = format!("ws://{}:{}/ws/", self.config.server_host, self.config.ws_port);
515 log::info!("Connecting to server at {}", ws_url);
516
517 let (ws_stream, _) = connect_async(&ws_url).await
518 .map_err(|e| anyhow!("Failed to connect to server at {}: {}", ws_url, e))?;
519
520 let (mut write, mut read) = ws_stream.split();
521
522 // Send gm.get_layout request
523 let request = CommandMessage::request("gm.get_layout", serde_json::Value::Null);
524 let transaction_id = request.transaction_id;
525 let request_json = serde_json::to_string(&request)?;
526
527 write.send(Message::Text(request_json)).await
528 .map_err(|e| anyhow!("Failed to send layout request: {}", e))?;
529
530 // Wait for response with matching transaction_id
531 let timeout = Duration::from_secs(10);
532 let start = std::time::Instant::now();
533 let mut layout: Option<HashMap<String, serde_json::Value>> = None;
534
535 while start.elapsed() < timeout {
536 match tokio::time::timeout(Duration::from_secs(1), read.next()).await {
537 Ok(Some(Ok(Message::Text(text)))) => {
538 if let Ok(response) = serde_json::from_str::<CommandMessage>(&text) {
539 if response.transaction_id == transaction_id {
540 if !response.success {
541 return Err(anyhow!("Server error: {}", response.error_message));
542 }
543 layout = Some(serde_json::from_value(response.data)?);
544 break;
545 }
546 // Skip broadcasts and other messages
547 if response.message_type == MessageType::Broadcast {
548 continue;
549 }
550 }
551 }
552 Ok(Some(Ok(_))) => continue,
553 Ok(Some(Err(e))) => return Err(anyhow!("WebSocket error: {}", e)),
554 Ok(None) => return Err(anyhow!("Server closed connection")),
555 Err(_) => continue, // Timeout on single read, keep trying
556 }
557 }
558
559 let layout = layout.ok_or_else(|| anyhow!("Timeout waiting for layout response"))?;
560 log::info!("Layout received with {} entries.", layout.len());
561
562 // We keep the WebSocket open for sending updates
563 // let _ = write.close().await;
564
565 // 2. Find Signal Offsets
566 let tick_offset = self.find_offset(&layout, &self.config.tick_signal_name)?;
567 let busy_offset = if let Some(name) = &self.config.busy_signal_name {
568 Some(self.find_offset(&layout, name)?)
569 } else {
570 None
571 };
572
573 // 4. Open Shared Memory
574 let shmem = ShmemConf::new().os_id(&self.config.shm_name).open()?;
575 let base_ptr = shmem.as_ptr();
576 log::info!("Shared Memory '{}' mapped.", self.config.shm_name);
577
578 // 5. Setup Pointers
579 // SAFETY: We trust the server's layout matches the generated GlobalMemory struct.
580 let gm = unsafe { &mut *(base_ptr as *mut P::Memory) };
581
582 // Get tick event from shared memory
583 log::info!("Setting up tick event at offset {} (base_ptr: {:p})", tick_offset, base_ptr);
584 let (tick_event, _) = unsafe {
585 Event::from_existing(base_ptr.add(tick_offset))
586 }.map_err(|e| anyhow!("Failed to open tick event: {:?}", e))?;
587 log::info!("Tick event ready");
588
589 // Busy signal event (optional)
590 let busy_event = busy_offset.map(|offset| {
591 unsafe { Event::from_existing(base_ptr.add(offset)) }
592 .map(|(event, _)| event)
593 .ok()
594 }).flatten();
595
596 // 6. Initialize local memory buffer and user program
597 // We use a local copy for the control loop to ensure:
598 // - Consistent snapshot of inputs at start of cycle
599 // - Atomic commit of outputs at end of cycle
600 // - Proper memory barriers for cross-process visibility
601 let mut local_mem: P::Memory = unsafe { std::ptr::read_volatile(gm) };
602 let mut prev_mem: P::Memory = local_mem; // Snapshot for change detection
603
604 fence(Ordering::Acquire); // Ensure we see all prior writes from other processes
605
606 self.program.initialize(&mut local_mem);
607
608 // Write back any changes from initialize
609 fence(Ordering::Release);
610 unsafe { std::ptr::write_volatile(gm, local_mem) };
611
612 // Set up signal handler for graceful shutdown
613 let running = Arc::new(AtomicBool::new(true));
614 let r = running.clone();
615
616 // Only set handler if not already set
617 if let Err(e) = ctrlc::set_handler(move || {
618 r.store(false, Ordering::SeqCst);
619 }) {
620 log::warn!("Failed to set signal handler: {}", e);
621 }
622
623 log::info!("Entering Control Loop - waiting for first tick...");
624 let mut cycle_count: u64 = 0;
625
626 while running.load(Ordering::SeqCst) {
627 // Wait for Tick - Event-based synchronization
628 // Use a timeout (1s) to allow checking the running flag periodically
629 match tick_event.wait(Timeout::Val(Duration::from_secs(1))) {
630 Ok(_) => {},
631 Err(e) => {
632 // Check for timeout
633 let err_str = format!("{:?}", e);
634 if err_str.contains("Timeout") {
635 continue;
636 }
637 return Err(anyhow!("Tick wait failed: {:?}", e));
638 }
639 }
640
641 if !running.load(Ordering::SeqCst) {
642 log::info!("Shutdown signal received, exiting control loop.");
643 break;
644 }
645
646 cycle_count += 1;
647 if cycle_count == 1 {
648 log::info!("First tick received!");
649 }
650
651 // === INPUT PHASE ===
652 // Read all variables from shared memory into local buffer.
653 // This gives us a consistent snapshot of inputs for this cycle.
654 // Acquire fence ensures we see all writes from other processes (server, modules).
655 local_mem = unsafe { std::ptr::read_volatile(gm) };
656
657 // Update prev_mem before execution to track changes made IN THIS CYCLE
658 // Actually, we want to know what changed in SHM relative to what we last knew,
659 // OR what WE changed relative to what we read?
660 // The user wants "writes on shared variables" to be broadcast.
661 // Typically outputs.
662 // If inputs changed (from other source), broadcasting them again is fine too.
663 // Let's capture state BEFORE execution (which is what we just read from SHM).
664 prev_mem = local_mem;
665
666 fence(Ordering::Acquire);
667
668 // === EXECUTE PHASE ===
669 // Execute user logic on the local copy.
670 // All reads/writes during process_tick operate on local_mem.
671 self.program.process_tick(&mut local_mem, cycle_count);
672
673 // === OUTPUT PHASE ===
674 // Write all variables from local buffer back to shared memory.
675 // Release fence ensures our writes are visible to other processes.
676 fence(Ordering::Release);
677 unsafe { std::ptr::write_volatile(gm, local_mem) };
678
679 // === CHANGE DETECTION & NOTIFICATION ===
680 let changes = local_mem.get_changes(&prev_mem);
681 if !changes.is_empty() {
682 // Construct bulk write message
683 let mut data_map = serde_json::Map::new();
684 for (key, val) in changes {
685 data_map.insert(key.to_string(), val);
686 }
687
688 let msg = CommandMessage::request("gm.write", serde_json::Value::Object(data_map));
689 let msg_json = serde_json::to_string(&msg).unwrap_or_default();
690
691 // Send via WebSocket (fire and forget, don't block)
692 // Note: WebSocket send is async. We are in block_on.
693 // We can await it. If it takes too long, it might delay the cycle.
694 // Ideally we should spawn this? But spawn requires 'static or Arc.
695 // For now, let's await with a very short timeout or just await.
696 // write is Sink.
697 if let Err(e) = write.send(Message::Text(msg_json)).await {
698 log::error!("Failed to send updates: {}", e);
699 }
700 }
701
702 // Signal Busy/Done event
703 if let Some(ref busy_ev) = busy_event {
704 let _ = busy_ev.set(EventState::Signaled);
705 }
706 }
707
708 Ok(())
709 })
710 }
711
712 fn find_offset(&self, layout: &HashMap<String, serde_json::Value>, name: &str) -> Result<usize> {
713 let info = layout.get(name).ok_or_else(|| anyhow!("Signal '{}' not found in layout", name))?;
714 info.get("offset")
715 .and_then(|v| v.as_u64())
716 .map(|v| v as usize)
717 .ok_or_else(|| anyhow!("Invalid offset for '{}'", name))
718 }
719}
720
721/// Generates the standard `main` function for a control program.
722///
723/// This macro reduces boilerplate by creating a properly configured `main`
724/// function that initializes and runs your control program.
725///
726/// # Arguments
727///
728/// * `$prog_type` - The type of your control program (must implement [`ControlProgram`])
729/// * `$shm_name` - The shared memory segment name (string literal)
730/// * `$tick_signal` - The tick signal name in shared memory (string literal)
731///
732/// # Example
733///
734/// ```ignore
735/// mod gm;
736/// use gm::GlobalMemory;
737///
738/// pub struct MyProgram;
739///
740/// impl MyProgram {
741/// pub fn new() -> Self { Self }
742/// }
743///
744/// impl autocore_std::ControlProgram for MyProgram {
745/// type Memory = GlobalMemory;
746///
747/// fn process_tick(&mut self, mem: &mut GlobalMemory, _cycle: u64) {
748/// // Your logic here
749/// }
750/// }
751///
752/// // This generates the main function
753/// autocore_std::autocore_main!(MyProgram, "my_project_shm", "tick");
754/// ```
755///
756/// # Generated Code
757///
758/// The macro expands to:
759///
760/// ```ignore
761/// fn main() -> anyhow::Result<()> {
762/// let config = autocore_std::RunnerConfig {
763/// server_host: "127.0.0.1".to_string(),
764/// ws_port: autocore_std::DEFAULT_WS_PORT,
765/// module_name: "control".to_string(),
766/// shm_name: "my_project_shm".to_string(),
767/// tick_signal_name: "tick".to_string(),
768/// busy_signal_name: None,
769/// log_level: log::LevelFilter::Info,
770/// log_udp_port: autocore_std::logger::DEFAULT_LOG_UDP_PORT,
771/// };
772///
773/// autocore_std::ControlRunner::new(MyProgram::new())
774/// .config(config)
775/// .run()
776/// }
777/// ```
778#[macro_export]
779macro_rules! autocore_main {
780 ($prog_type:ty, $shm_name:expr, $tick_signal:expr) => {
781 fn main() -> anyhow::Result<()> {
782 let config = autocore_std::RunnerConfig {
783 server_host: "127.0.0.1".to_string(),
784 ws_port: autocore_std::DEFAULT_WS_PORT,
785 module_name: "control".to_string(),
786 shm_name: $shm_name.to_string(),
787 tick_signal_name: $tick_signal.to_string(),
788 busy_signal_name: None,
789 log_level: log::LevelFilter::Info,
790 log_udp_port: autocore_std::logger::DEFAULT_LOG_UDP_PORT,
791 };
792
793 autocore_std::ControlRunner::new(<$prog_type>::new())
794 .config(config)
795 .run()
796 }
797 };
798}
799